Device for igniting and extinguishing gas.



PATENTED SEPT. 11, 1906.

R. N. OAKMAN. DEVICE FOR IGNITING AND EXTINGUISHING GAS.

APPLICATION FILED JUNE 2, 1905.

l m P IGB. FIG.

FG5 F WITNESSES:

UNITED STATES PATENT orrron.

Specification of Letters Patent.

Patented. Sept. 11, 1906.

Application filed June 2,1905. Serial No. 263,412.

To all whom, it may concern:

Be it known that I, RICHARD N. OAKMAN, a citizen of the United States, and a resident of the city, county, and State of New York, have invented a new and useful Improvement in Devices for Igniting and Extinguish ing Gas, of which the following is a full de scription.

The object of the invention is to construct a device which may be actuated from a dis tance to turn on the gas and cause an electric spark to ignite it when turned on and by a reverse movement of the actuating devices to shut off the gas, and thereby extinguish it.

The accompanying drawings illustrate the invention, of which Figure 1 is an upright sectional view of the device, showing it as arranged to produce a spark upon the burner-tip Fig. 2, a vertical section of the same with a stationary electrode located in the path of the gas escaping from the burner; Fig. 3, also a vertical section showing a movable electrode away from the burner and ready to be moved upon and across it; Fig. 4, a plan View of cylinder and reciprocating piston, showing the construction of the piston; Fig. 5, a cross-sectionof cylinder and piston on line a b, Fig. 3 Fig. 6, a cross-section on line 0 d of Fig. 3 Fig. 7, a crosssection on line 6 f of Fig. 3.

1 is a post or standard provided with the socket 2 to attach it to a gas-pipe and also provided with the throughway 3, communicating with the burner 1. Through an opening in the standard is inserted the cylinder 5, provided with the openings 15 16, which when open constitute a throughway from the source of gas-supply through the way 3 to the burner. The cylinder 5 is closed at its ends by the caps 6 and 7, and within the cylinder is placed the reciprocating piston 8, which operates to close the ports and shut off the gas when the body 17 of the piston is over the port 15. The construction of the piston is shown in Fig. 4. Upon its periphery is partly cut or slotted a plane surface or way, as shown at 9, and within this cut-away port is inserted the crank-arm 11, attached to a shaft 12, suitably journaled in the standard, which carries a movable electrode 13, Figs. 1, 2, and 3. This electrode makes and breaks contact upon a stationary electrode of opposite polaritythe burner-tip 4, as shown in Fig. 1, or the electrode 14, located in the path of the escaping gas, as shown in Fig. 2. The main body of the piston is shown at 17, and this body as it reciprocates in the cylinder passes over the port 15 to close it and shut off the supply of gas, and when moved in the opposite direction the body 17 passes beyond the opening 15, giving free passage through port 15, open space 10, (which lies beyond the body 17,) port 16, and way 3, to the burner. Upon a suitable part of the periphery of the piston is cut the slot 18, Figs. 1, 2, 5, and 6, which communicates with cut-out space 9. The object of this is to allow the air or gas which may be in the end of the cylinder to escape and pass out through the way 3 and also to permit the entrance of air to the cylinder when the piston is moved in the opposite direction.

The iston may be reciprocated by any of the well-known devices for compressing air, which need not be described. Such a device would be connected with the nozzle 1 9. A current of electricity may be conducted to the electrode by any of the wellknown devices. As illustrated in the drawings, the operation of the device is as follows: The piston standing at the end of its backward stroke, as shown in Fig. 3, the gas being ignited, a pressure of air or other fluid entering through the opening in the nozzle 19 forces the piston forward until the body 17 passes over and closes the port 15, thus shutting off the supply of gas and extinguishing the flame at the burner, and this action causes a return of the movable electrode to its normal position. To ignite the gas, the air is exhausted at the end of the cylinder near the nozzle 19, the piston returns, its body 17 passing beyond the opening 15, leaving the flow of gas free to the burner, and this action causes the movable electrode 13 to pass upon and across the stationary electrode and induce an electric spark to ignite the gas escaping from the burner.

l/Vhat I claim, and desire to secure by Letters Patent, is

1. In a device for igniting and extinguishing gas, a cylinder, having a throughway for the passage of the gas to a burner, and provided with a reciprocating piston, to open and close the throughway, and a burner at the end of the throughway, in combination with a rotating shaft, provided with a crankarm which projects into the cylinder, said arm located in position to contact with the body of the reciprocating piston, an electrode carried by the shaft and arranged to make and break an electric circuit and cause a spark to light the gas at the burner when turned on.

2. In a device for igniting and extinguishing gas, a cylinder having a throughway for the passage of the gas to a burner, and provided with a reciprocating piston to open and close the throug'hway, and a burner at the end of the throughway, the piston having a portion of its body out out to receive a crankarm and move it back. and forth, in combination with a rotating shaft, provided with a crank-arm, which extends into the cylinder and occupies the cut-out portion of the piston, an electrode rotated by the shaft to make and break an electric circuit and cause a spark in the path of the gas when escaping from the burner.

In testimony whereof I, RICHARD N. OAK- MAN, have signed my name to this specification, in the presence of two subscribing witnesses, this 1st day of June, 1905.

RICHARD N. OAKMAN.

Witnesses JNo. H. MANGHAM, MARGARET TURNER. 

